ST72T774J9B1 STMicroelectronics, ST72T774J9B1 Datasheet - Page 119
ST72T774J9B1
Manufacturer Part Number
ST72T774J9B1
Description
Manufacturer
STMicroelectronics
Datasheet
1.ST72T774J9B1.pdf
(144 pages)
Specifications of ST72T774J9B1
Cpu Family
ST7
Device Core Size
8b
Frequency (max)
24MHz
Interface Type
I2C/USB
Program Memory Type
EPROM
Program Memory Size
60KB
Total Internal Ram Size
1KB
# I/os (max)
31
Number Of Timers - General Purpose
1
Operating Supply Voltage (typ)
5V
Operating Supply Voltage (max)
5.5V
Operating Supply Voltage (min)
4V
On-chip Adc
1-chx8-bit
On-chip Dac
1-chx8-bit
Instruction Set Architecture
CISC
Operating Temp Range
0C to 70C
Operating Temperature Classification
Commercial
Mounting
Through Hole
Pin Count
42
Package Type
SPDIP
Lead Free Status / Rohs Status
Specific Sites Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Part Number:
ST72T774J9B1
Manufacturer:
ST
Quantity:
20 000
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PWM/BRM GENERATOR (Cont’d)
Figure 73. Simplified Filtered Voltage Output Schematic with BRM added
Figure 74. Graphical Representation of 4-Bit BRM Added Pulse Positions
BRM VALUE
0001 bit0=1
0100 bit2=1
0100 bit2=1
0001 bit0=1
Examples
PWMOUT
VOLTAGE
OUTPUT
0110
1111
VDD
VDD
0V
0V
0
1
2
3
EXTENDED PULSE
4
BRM
5
PWM Pulse Number (0-15)
=
T
CPU
6
7
8
9
=
10
ST72774/ST727754/ST72734
11
12
13
BRM = 0
BRM = 1
14
15
119/144
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